I did not like the taste--kind of chalky sour. And I swear it made my sweat smell funny.

have you tried plant based protein powders like Sunwarrior?

The whey might not be the issue; you sure it's not the "a1" type of casein protein that might be bothering you? Milk proteins often have a1 casein protein which is problematic for some people. Goat milk contains a type of casein protein called "a2" which is generally not problematic for people. Google a1 vs a2 casein protein and also search it on Paleohacks for more info.

Hmmm I'll have to try that...I seem to tolerate goat's milk better than cow.

Back when I was vegan I used the fermented brown rice protein powder by SunWarrior... and my god did it ever give me the worst gas imaginable. I'm talking foul, sulfuric gas. My poor sister had to put up with it. That stuff was so expensive, too. It began as soon as I started using it and stopped as soon as I quit taking it. That has never happened with any other protein powder, not even with Vega. Now I use goat milk protein powder, specifically "GOPRO Matrix" manufactured by St. Francis Herb Farm. It's a Canadian product and I love it. It's very low in carbohydrates and only has 1 g of [naturally occurring] sugar in it I believe, and so I have used it successfully during ketosis. It also contains an abundance of trace minerals, is fermented and predigested, thereby making it 99% bioavailable to you. It also contains a bit of casein which prevents muscle wasting- most protein powders lack this, particularly whey isolates. This particular product has added probiotics. It's a fantastic product. However, I wish I could get Capra protein powder: it may be the most superior protein powder on the market in my opinion; it's a nearly unprocessed whole food, is also fermented, has probiotics, and comes from grass-fed, pastured goats. But they only ship within the US, so until they deliver to Canada, the St. Francis products are great. Word of caution, GOPRO is expensive, unless you purchase online. Stores increase the price by $30 or more for the larger, 1000 G tub. It should never be more than $60, but will often cost you $90 in health food stores, not including taxes.

I've been using Paleo Pro, it has zero whey or milk for that matter. It seems really simple and just egg and beef based. It tastes super good too, its not gritty or chalky at all.

paleoproproducts.com

I purchased my 2 bags from truenutrition.com though. Give it a shot, it might help?